javascript check if argument is passed

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Nick
16 Jan 2017
1function func(arg1, arg2) {
2  if (typeof arg2 === "undefined") {
3    arg2 = "defaultValue";
4  }
5  
6  //Rest of function
7}
Nicolò
25 Nov 2020
1function addition(arg1, arg2) {
2			if (typeof arg1 === "undefined" || typeof arg2 === "undefined") {
3				arg3 = "Please Give Me Default Value";
4				document.write(arg3);
5				console.log(arg3);
6			} else {
7				var arg1;
8				var arg2;
9				var arg3 = arg1 + arg2;
10				document.write(arg3);
11				console.log(arg3);
12			}
13		}
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